for the environment, great for cars, is actually dangerous for the car, and in some cases, it voids your warranty. it's a big deal. what's the new research show? >> well, it goes into another part of the fuel system. the original research we look at looked at just the valves and the valve seals so it hurts your engine. now, this looks at the fuel components, itself, the pumps, the components of the distribution system. there are other parts of the vehicle, too, to be tested. it takes awhile to do this, but layer upon layer, the more we look, the more problems we're seeing. it's irresponsible to move forward in this fashion knowing full well that millions of cars in america could be affected. this is just, you know, epa's deal to push this fuel out to cars that were not designed to use it. melissa: talk about that specifically. in what cars is it safe? i understand in flex fuel vehicles and cars that are 20 # -- 2012 and knewer. -- newer. >> cars designed for that use, designed to handle e-15, and the auto companies went to congress saying we cannot warrantee our vehicles not designed to handle this.